CN105628143A - Liquid volume detection method and liquid volume detection device used for negative pressure wound therapy equipment - Google Patents
Liquid volume detection method and liquid volume detection device used for negative pressure wound therapy equipment Download PDFInfo
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- CN105628143A CN105628143A CN201610072342.3A CN201610072342A CN105628143A CN 105628143 A CN105628143 A CN 105628143A CN 201610072342 A CN201610072342 A CN 201610072342A CN 105628143 A CN105628143 A CN 105628143A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
Abstract
The invention discloses a liquid volume detection method and a liquid volume detection device used for negative pressure wound therapy equipment. The liquid volume detection method comprises the following steps: acquiring an inclination angle theta of a liquid storage bottle, a first capacitance value C1 measured by a first measuring electrode and a second capacitance value C2 measured by a second measuring electrode; judging whether the inclination angle theta is less than or equal to a first preset angle or not; when the inclination angle theta is less than or equal to the first preset angle, working out liquid volume L in the liquid storage bottle according to the first capacitance value C1 and the second capacitance value C2. The liquid volume detection method and the liquid volume detection device disclosed by the invention have the advantage of being high in detection precision.
Description
Technical field
The present invention relates to technical field of medical instruments, be specifically related to a kind of liquid inspection method for negative pressure wound surface therapeutic equipment and device.
Background technology
Negative pressure wound surface therapeutic equipment is attraction source mainly by negative pressure, the mode carrying out continuous schedule or discontinuous attraction draws hydrops around wound surface, hydrops (transudate) is stored in fluid reservoir, such that it is able to effectively increase wound blood flow and advantageously reduce tissue edema and promote wound healing. In treatment extremity soft tissue contusion, diabetic foot and carbuncle, degree of depth pressure ulcer, ulcer, skin-grafting shaping etc., there is good curative effect.
At present, liquid level in fluid reservoir, the detection method of liquid measure is substantially and utilizes capacitance level gauge to measure, such as application number is the Chinese patent application of 201210007252.8, its principle is: adopt the change measuring electric capacity to measure the height of liquid level, rapier line and conducting liquid constitute a capacitor, wherein the metal inside of rapier line is a pole of electric capacity, conducting liquid is another pole of electric capacity, centre is PPR or the polyvinyl fluoride of high stability, namely the insulator outer layer of rapier line is as the medium between the two poles of the earth, change along with liquid level, liquid surrounds the area of rapier line and changes therewith, the relative area making composition capacitor the two poles of the earth changes, cause the change of electric capacity, formula according to concentric tubular electric capacity can draw the relation of liquid height and electric capacity.
But, prolongation along with the time of use, capacitance sensing device all there will be a degree of aging, abrasion, thus causing that measured liquid level, liquid measure there will be certain error, reduce accuracy of detection, if and in fluid reservoir, amount of liquid skewness or fluid reservoir occur, and liquid capacity metering value also can be made inaccurate, reduce accuracy of detection.
Summary of the invention
Therefore, the embodiment of the present invention to solve the technical problem that and to be in that liquid inspection method accuracy of detection of the prior art is low.
For this, a kind of liquid inspection method for negative pressure wound surface therapeutic equipment of the embodiment of the present invention, described negative pressure wound surface therapeutic equipment includes liquid containing bottle and angular transducer, is provided with the measurement electrode of at least two capacitance type sensor in described liquid containing bottle, and first measures the height H of electrode1The height H of electrode is measured less than second2, first one end measuring electrode and the second measurement electrode flushes and described one end is respectively positioned on bottom liquid containing bottle, and described angular transducer is for detecting the angle of inclination of liquid containing bottle; Described liquid inspection method comprises the following steps:
The first capacitance C that the tilt angle theta of acquisition liquid containing bottle, described first measurement electrode measurement arrive1The second capacitance C that electrode measurement arrives is measured with described second2;
Judge that whether described tilt angle theta is less than or equal to the first predetermined angle;
When described tilt angle theta is less than or equal to the first predetermined angle, according to described first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle.
Preferably, described liquid measure L calculates according to below equation:
L=(C2/C1)*H1*K+B
Wherein, K and B is preset constant.
Preferably, further comprising the steps of:
When described tilt angle theta is more than the first predetermined angle, it is judged that whether described tilt angle theta is less than or equal to the second predetermined angle, and described first predetermined angle is less than the second predetermined angle;
When described tilt angle theta is less than or equal to the second predetermined angle, it is judged that whether the 3rd measures electrode measures the 3rd capacitance C because detecting liquid3, the other end of the described 3rd one end and the second measurement electrode measuring electrode flushes and the described other end is positioned at liquid containing bottle top;
When the 3rd measurement electrode is not measured by described 3rd capacitance C3Time, according to described tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle.
Preferably, described liquid measure L ' calculates according to below equation:
Wherein, R represents that the highest liquid level point is to the second distance measuring electrode place straight line, and x represents the second capacitance C2Corresponding liquid level, K and B is preset constant.
Preferably, further comprising the steps of:
When the 3rd measurement electrode measurement to described 3rd capacitance C3Time, it is thus achieved that the liquid measure L in liquid containing bottle is " for the maximum liquid measure that liquid containing bottle can store.
Preferably, further comprising the steps of:
When described tilt angle theta is more than the second predetermined angle, produce alarm signal.
A kind of liquid inspection device for negative pressure wound surface therapeutic equipment of the embodiment of the present invention, described negative pressure wound surface therapeutic equipment includes liquid containing bottle and angular transducer, being provided with the measurement electrode of at least two capacitance type sensor in described liquid containing bottle, first measures the height H of electrode1The height H of electrode is measured less than second2, first one end measuring electrode and the second measurement electrode flushes and described one end is respectively positioned on bottom liquid containing bottle, and described angular transducer is for detecting the angle of inclination of liquid containing bottle; Described liquid inspection device includes:
Acquiring unit, for obtaining the tilt angle theta of liquid containing bottle, described first measures the first capacitance C that electrode measurement arrives1The second capacitance C that electrode measurement arrives is measured with described second2;
First judging unit, is used for judging that whether described tilt angle theta is less than or equal to the first predetermined angle;
First liquid measure obtains unit, for when described tilt angle theta is less than or equal to the first predetermined angle, according to described first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle.
Preferably, also include:
Second judging unit, for when described tilt angle theta is more than the first predetermined angle, it is judged that whether described tilt angle theta is less than or equal to the second predetermined angle, and described first predetermined angle is less than the second predetermined angle;
3rd judging unit, for when described tilt angle theta is less than or equal to the second predetermined angle, it is judged that whether the 3rd measures electrode measures the 3rd capacitance C because detecting liquid3, the other end of the described 3rd one end and the second measurement electrode measuring electrode flushes and the described other end is positioned at liquid containing bottle top;
Second liquid measure obtains unit, for being not measured by described 3rd capacitance C when the 3rd measurement electrode3Time, according to described tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle.
Preferably, also include:
3rd liquid measure obtains unit, for when the 3rd measurement electrode measurement to described 3rd capacitance C3Time, it is thus achieved that the liquid measure L in liquid containing bottle is " for the maximum liquid measure that liquid containing bottle can store.
Preferably, also include:
Alarm signal generation unit, for when described tilt angle theta is more than the second predetermined angle, producing alarm signal.
The technical scheme of the embodiment of the present invention, has the advantage that
1. the embodiment of the present invention provide liquid inspection method and device, by tilt angle theta is compared with the first predetermined angle, when tilt angle theta is less than or equal to the first predetermined angle, namely show when fluid reservoir gradient is little, according to the first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle, capacitance corresponding to real-time level measured is carried out verification and revises, it is to avoid the detection error caused because of situations such as aging, the abrasions of capacitance type sensor, improve liquid inspection precision.
2. the embodiment of the present invention provide liquid inspection method and device, by tilt angle theta is compared with first, second predetermined angle respectively, when tilt angle theta more than the first predetermined angle and less than or etc. the second predetermined angle time, namely show that fluid reservoir gradient is relatively big, and when the 3rd measurement electrode is not measured by the 3rd capacitance C3Time, when namely liquid level is without departing from the highest liquid level, according to tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle, the calculating of visible liquid measure not only allowing for, the capacitance that the real-time level measured is corresponding is carried out verification revise, and consider the angle of inclination impact on liquid measure, eliminate the liquid measure deviation introduced because of inclination, thus further increasing the precision of liquid inspection.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the specific embodiment of the invention, below the accompanying drawing used required during detailed description of the invention is described is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of a concrete example of liquid inspection method in the embodiment of the present invention 1;
Fig. 2 is the flow chart of another concrete example of liquid inspection method in the embodiment of the present invention 1;
Fig. 3 is the theory diagram of a concrete example of liquid inspection device in the embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
In describing the invention, it is necessary to explanation, term " first ", " second " etc. only for descriptive purposes, and it is not intended that instruction or hint relative importance.
As long as just can be combined with each other additionally, technical characteristic involved in invention described below difference embodiment does not constitute conflict each other.
Embodiment 1
The present embodiment provides a kind of liquid inspection method for negative pressure wound surface therapeutic equipment, such as, negative pressure wound surface therapeutic equipment includes liquid containing bottle and angular transducer, the measurement electrode of at least two capacitance type sensor it is provided with in liquid containing bottle, such as, it is provided with the first measurement electrode of the first capacitance type sensor, the second measurement electrode of the second capacitance type sensor and the 3rd of the 3rd capacitance type sensor in liquid containing bottle and measures electrode. The first height H measuring electrode1The height H of electrode is measured less than second2, first one end measuring electrode and the second measurement electrode flushes and one end is respectively positioned on bottom liquid containing bottle, and angular transducer is for detecting the angle of inclination of liquid containing bottle, it is preferable that first measures the height H of electrode1It is generally much smaller than the height H of the second measurement electrode2, when actual liquid capacity metering, liquid submergence first can measure electrode, so, first measures the first capacitance C that electrode measurement arrives1As checking data, can measure, to second, the second capacitance C that electrode measurement arrives2Verify, round-off error, such that it is able to improve liquid inspection precision. As it is shown in figure 1, liquid inspection method comprises the steps:
S1, obtaining the tilt angle theta of liquid containing bottle, first measures the first capacitance C of arriving of electrode measurement1The second capacitance C that electrode measurement arrives is measured with second2;
S2, judge that whether tilt angle theta is less than or equal to the first predetermined angle; Preferably, the first predetermined angle can be 5 �㡫10 ��. When tilt angle theta is less than or equal to the first predetermined angle, it was shown that liquid containing bottle is substantially at horizontal positioned state, it does not have tilt, in liquid containing bottle, amount of liquid distribution ratio is more uniform, then enter step S3.
S3, according to the first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle. Preferably, liquid measure L calculates according to below equation:
L=(C2/C1)*H1*K+B
Wherein, K and B is preset constant. It will be understood by those of skill in the art that according to the first capacitance C1With the second capacitance C2The method calculating the liquid measure L in liquid containing bottle is not limited to be calculated by above-mentioned formula obtain, it is also possible to the computational methods being capable of verification debugging functions by other calculate acquisition liquid measure L.
Above-mentioned liquid inspection method, by tilt angle theta being compared with the first predetermined angle, when tilt angle theta is less than or equal to the first predetermined angle, namely shows when fluid reservoir gradient is little, according to the first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle, capacitance corresponding to real-time level measured is carried out verification and revises, it is to avoid the detection error caused because of situations such as aging, the abrasions of capacitance type sensor, improve liquid inspection precision.
Preferably, as in figure 2 it is shown, liquid inspection method is further comprising the steps of:
S4, when tilt angle theta is more than the first predetermined angle, show that liquid containing bottle tilts, in liquid containing bottle, amount of liquid distribution can be less uniform, the calculating of liquid measure in liquid containing bottle can be produced impact by angle of inclination, therefore liquid measure needs to consider the impact at angle of inclination when calculating, then judging that whether tilt angle theta is less than or equal to the second predetermined angle, the first predetermined angle is less than the second predetermined angle; Preferably, the first predetermined angle can be 10 �㡫40 ��. When tilt angle theta is less than or equal to the second predetermined angle, it was shown that the inclined degree of liquid containing bottle is but without beyond higher limit, then entering step S5.
S5, judge that whether the 3rd measurement electrode measures the 3rd capacitance C because detecting liquid3, the other end of the 3rd one end and the second measurement electrode measuring electrode flushes and the other end is positioned at liquid containing bottle top. When the 3rd measurement electrode is not measured by the 3rd capacitance C3Time, it was shown that liquid level without departing from the highest liquid level, then enters step S6. When the 3rd measurement electrode measurement to the 3rd capacitance C3Time, it was shown that liquid level beyond the highest liquid level, then enters step S7.
S6, according to tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle. Preferably, liquid measure L ' calculates according to below equation:
Wherein, R represents that the highest liquid level point is to the second distance measuring electrode place straight line, and x represents the second capacitance C2Corresponding liquid level, K and B is preset constant. It will be understood by those of skill in the art that according to tilt angle theta, the first capacitance C1With the second capacitance C2The method calculating the liquid measure L ' in liquid containing bottle is not limited to be calculated by above-mentioned formula obtain, it is also possible to be capable of utilizing the computational methods that liquid measure is modified function by angle of inclination to calculate acquisition liquid measure L ' by other.
S7, the liquid measure L obtained in liquid containing bottle are " for the maximum liquid measure that liquid containing bottle can store. After in acquisition liquid containing bottle, liquid measure is maximum liquid measure, it is possible to control the suction element in negative pressure wound surface therapeutic equipment and stop or suspending suction, so that liquid is no longer flow in liquid containing bottle, thus preventing liquid spilling in liquid containing bottle.
Above-mentioned liquid inspection method, by tilt angle theta is compared with first, second predetermined angle respectively, when tilt angle theta more than the first predetermined angle and less than or etc. the second predetermined angle time, namely show that fluid reservoir gradient is relatively big, and when the 3rd measurement electrode be not measured by the 3rd capacitance C3Time, when namely liquid level is without departing from the highest liquid level, according to tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle, the calculating of visible liquid measure not only allowing for, the capacitance that the real-time level measured is corresponding is carried out verification revise, and consider the angle of inclination impact on liquid measure, eliminate the liquid measure deviation introduced because of inclination, thus further increasing the precision of liquid inspection.
Preferably, as in figure 2 it is shown, liquid inspection method is further comprising the steps of:
S8, when tilt angle theta is more than the second predetermined angle, it was shown that liquid containing bottle tilts excessive, no matter the whether overfill of the liquid in liquid containing bottle, it is likely to liquid level and arrives pump orifice, and make suction element pump out liquid, cause the damage of the devices such as suction element, then produce alarm signal. After obtaining alarm signal, it is possible to the devices such as control and suck element are closed in time, it is prevented that damage, it is possible to control to stop liquid measure being sampled.
Embodiment 2
Corresponding to embodiment 1, the present embodiment provides a kind of liquid inspection device for negative pressure wound surface therapeutic equipment, as it is shown on figure 3, liquid inspection device includes:
Acquiring unit 1, for obtaining the tilt angle theta of liquid containing bottle, first measures the first capacitance C that electrode measurement arrives1The second capacitance C that electrode measurement arrives is measured with second2;
First judging unit 2, is used for judging that whether tilt angle theta is less than or equal to the first predetermined angle;
First liquid measure obtains unit 3, for when tilt angle theta is less than or equal to the first predetermined angle, according to the first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle.
Above-mentioned liquid inspection device, by tilt angle theta being compared with the first predetermined angle, when tilt angle theta is less than or equal to the first predetermined angle, namely shows when fluid reservoir gradient is little, according to the first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle, capacitance corresponding to real-time level measured is carried out verification and revises, it is to avoid the detection error caused because of situations such as aging, the abrasions of capacitance type sensor, improve liquid inspection precision.
Preferably, liquid inspection device also includes:
Second judging unit, for when tilt angle theta is more than the first predetermined angle, it is judged that whether tilt angle theta is less than or equal to the second predetermined angle, and the first predetermined angle is less than the second predetermined angle;
3rd judging unit, for when tilt angle theta is less than or equal to the second predetermined angle, it is judged that whether the 3rd measures electrode measures the 3rd capacitance C because detecting liquid3, the other end of the 3rd one end and the second measurement electrode measuring electrode flushes and the other end is positioned at liquid containing bottle top;
Second liquid measure obtains unit, for being not measured by the 3rd capacitance C when the 3rd measurement electrode3Time, according to tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle.
3rd liquid measure obtains unit, for when the 3rd measurement electrode measurement to the 3rd capacitance C3Time, it is thus achieved that the liquid measure L in liquid containing bottle is " for the maximum liquid measure that liquid containing bottle can store.
Above-mentioned liquid inspection device, by tilt angle theta is compared with first, second predetermined angle respectively, when tilt angle theta more than the first predetermined angle and less than or etc. the second predetermined angle time, namely show that fluid reservoir gradient is relatively big, and when the 3rd measurement electrode be not measured by the 3rd capacitance C3Time, when namely liquid level is without departing from the highest liquid level, according to tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle, the calculating of visible liquid measure not only allowing for, the capacitance that the real-time level measured is corresponding is carried out verification revise, and consider the angle of inclination impact on liquid measure, eliminate the liquid measure deviation introduced because of inclination, thus further increasing the precision of liquid inspection.
Preferably, liquid inspection device also includes:
Alarm signal generation unit, for when tilt angle theta is more than the second predetermined angle, producing alarm signal. After obtaining alarm signal, it is possible to the devices such as control and suck element are closed in time, it is prevented that damage.
Obviously, above-described embodiment is only for clearly demonstrating example, and is not the restriction to embodiment. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without also cannot all of embodiment be given exhaustive. And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (10)
1. the liquid inspection method for negative pressure wound surface therapeutic equipment, it is characterized in that, described negative pressure wound surface therapeutic equipment includes liquid containing bottle and angular transducer, is provided with the measurement electrode of at least two capacitance type sensor in described liquid containing bottle, and first measures the height H of electrode1The height H of electrode is measured less than second2, first one end measuring electrode and the second measurement electrode flushes and described one end is respectively positioned on bottom liquid containing bottle, and described angular transducer is for detecting the angle of inclination of liquid containing bottle; Described liquid inspection method comprises the following steps:
The first capacitance C that the tilt angle theta of acquisition liquid containing bottle, described first measurement electrode measurement arrive1The second capacitance C that electrode measurement arrives is measured with described second2;
Judge that whether described tilt angle theta is less than or equal to the first predetermined angle;
When described tilt angle theta is less than or equal to the first predetermined angle, according to described first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle.
2. method according to claim 1, it is characterised in that described liquid measure L calculates according to below equation:
L=(C2/C1)*H1*K+B
Wherein, K and B is preset constant.
3. method according to claim 1 and 2, it is characterised in that further comprising the steps of:
When described tilt angle theta is more than the first predetermined angle, it is judged that whether described tilt angle theta is less than or equal to the second predetermined angle, and described first predetermined angle is less than the second predetermined angle;
When described tilt angle theta is less than or equal to the second predetermined angle, it is judged that whether the 3rd measures electrode measures the 3rd capacitance C because detecting liquid3, the other end of the described 3rd one end and the second measurement electrode measuring electrode flushes and the described other end is positioned at liquid containing bottle top;
When the 3rd measurement electrode is not measured by described 3rd capacitance C3Time, according to described tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle.
4. method according to claim 3, it is characterised in that described liquid measure L ' calculates according to below equation:
Wherein, R represents that the highest liquid level point is to the second distance measuring electrode place straight line, and x represents the second capacitance C2Corresponding liquid level, K and B is preset constant.
5. the method according to claim 3 or 4, it is characterised in that further comprising the steps of:
When the 3rd measurement electrode measurement to described 3rd capacitance C3Time, it is thus achieved that the liquid measure L in liquid containing bottle is " for the maximum liquid measure that liquid containing bottle can store.
6. the method according to any one of claim 3-5, it is characterised in that further comprising the steps of:
When described tilt angle theta is more than the second predetermined angle, produce alarm signal.
7. the liquid inspection device for negative pressure wound surface therapeutic equipment, it is characterized in that, described negative pressure wound surface therapeutic equipment includes liquid containing bottle and angular transducer, is provided with the measurement electrode of at least two capacitance type sensor in described liquid containing bottle, and first measures the height H of electrode1The height H of electrode is measured less than second2, first one end measuring electrode and the second measurement electrode flushes and described one end is respectively positioned on bottom liquid containing bottle, and described angular transducer is for detecting the angle of inclination of liquid containing bottle; Described liquid inspection device includes:
Acquiring unit, for obtaining the tilt angle theta of liquid containing bottle, described first measures the first capacitance C that electrode measurement arrives1The second capacitance C that electrode measurement arrives is measured with described second2;
First judging unit, is used for judging that whether described tilt angle theta is less than or equal to the first predetermined angle;
First liquid measure obtains unit, for when described tilt angle theta is less than or equal to the first predetermined angle, according to described first capacitance C1With the second capacitance C2Calculate the liquid measure L in liquid containing bottle.
8. device according to claim 7, it is characterised in that also include:
Second judging unit, for when described tilt angle theta is more than the first predetermined angle, it is judged that whether described tilt angle theta is less than or equal to the second predetermined angle, and described first predetermined angle is less than the second predetermined angle;
3rd judging unit, for when described tilt angle theta is less than or equal to the second predetermined angle, it is judged that whether the 3rd measures electrode measures the 3rd capacitance C because detecting liquid3, the other end of the described 3rd one end and the second measurement electrode measuring electrode flushes and the described other end is positioned at liquid containing bottle top;
Second liquid measure obtains unit, for being not measured by described 3rd capacitance C when the 3rd measurement electrode3Time, according to described tilt angle theta, the first capacitance C1With the second capacitance C2Calculate the liquid measure L ' in liquid containing bottle.
9. device according to claim 8, it is characterised in that also include:
3rd liquid measure obtains unit, for when the 3rd measurement electrode measurement to described 3rd capacitance C3Time, it is thus achieved that the liquid measure L in liquid containing bottle is " for the maximum liquid measure that liquid containing bottle can store.
10. device according to claim 8 or claim 9, it is characterised in that also include:
Alarm signal generation unit, for when described tilt angle theta is more than the second predetermined angle, producing alarm signal.
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| CN108310481A (en) * | 2018-02-07 | 2018-07-24 | 苏州元禾医疗器械有限公司 | A kind of Wound treating device |
| CN108332819A (en) * | 2018-02-27 | 2018-07-27 | 南京诺尔曼生物技术有限公司 | The method of liquid level in liquid storage detection structure, device and detection liquid storage bottle |
| CN111671147A (en) * | 2020-06-17 | 2020-09-18 | 深圳市新宜康科技股份有限公司 | Method for detecting tobacco juice based on infrared 3D posture |
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